A Ray of Light, Which Is Traveling in a Vacuum

Multiple Choice

A ray of light, which is traveling in a vacuum, is incident on a glass plate (n = ng) . For increasing angles of incidence, the angle of refraction

A) increases, approaching the limiting value of sin^-1 (1/n_g) degrees.
B) decreases, approaching the limiting value of zero degrees.
C) increases, approaching the limiting value of 90°.
D) increases, approaching the limiting value of sin^-1 (n_g) degrees.